From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sat, 12 Oct 2019 11:42:47 +0000 (+0100)
Subject: test: udp-preload: Provide setsockopt
X-Git-Tag: v0.5.0~111
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?a=commitdiff_plain;h=d0708bae1c9b9598798e2cc340364a8006b77db7;hp=24333a4b2ec70bb1bdaa0ce0390b666092def4c1;p=secnet.git

test: udp-preload: Provide setsockopt

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---

diff --git a/test/udp-preload.c b/test/udp-preload.c
index ec3be09..86240a4 100644
--- a/test/udp-preload.c
+++ b/test/udp-preload.c
@@ -59,9 +59,12 @@ static anyfn_type *find_any(const char *name) {
 
 #define socket_args int domain, int type, int protocol
 #define bind_args   int fd, const struct sockaddr *addr, socklen_t addrlen
-#define WRAPS(X)				\
-    X(socket, (domain,type,protocol))		\
-    X(bind,   (fd,addr,addrlen))
+#define setsockopt_args  int fd, int level, int optname, \
+                         const void *optval, socklen_t optlen
+#define WRAPS(X)					\
+    X(socket,     (domain,type,protocol))		\
+    X(bind,       (fd,addr,addrlen))			\
+    X(setsockopt, (fd,level,optname,optval,optlen))
 
 #define DEF_OLD(fn,args)				\
   typedef int fn##_fn_type(fn##_args);			\
@@ -160,4 +163,13 @@ WRAP(bind) {
     return old_bind(fd,(const void*)&sun,sizeof(sun));
 }
 
-//udp (test/tmp/outside.conf:19): setsockopt(,IPV6_V6ONLY,&1,): Operation not supported
+WRAP(setsockopt) {
+    fdinfo *ent=lookup(fd);
+    if (!ent) return old_setsockopt(fd,level,optname,optval,optlen);
+    if (ent->af==AF_INET6 && level==IPPROTO_IPV6 && optname==IPV6_V6ONLY
+	&& optlen==sizeof(int) && *(int*)optval==1) {
+	return 0;
+    }
+    errno=ENOTTY;
+    return -1;
+}